Sharpening device for shears



G. N. PALSER SHARPENING DEVICE "FOR SHEARS F Filed Aug. ll

Patented ugf. 7, 1923.

otras' srarss GEORGE it. Persan, or WORCESTER, MASSACHUSETTS.

SHARPENING DEVCEl FOR SHEARS.

Application filed August 11, 1919. Serial No. 316,537.

To all whom t may concer/a:

Be it known that L Gnonon N. Parisian, a citizen of the United States`residing at Vorcester, in the county ofVVoi-cester and State ofMassachusetts, have invented a new and useful Sharpening Device forShears, of which the following isa specification.

This invention relates to a sharpening device for shears, scissors,"andother blades of the well known type in which a clamp is provided for theblade, and a pivotal sup port at a distance from it for a rod connectedwith the grinding or sharpening` stone.

The principal objects of this invention are to providea sharpener ofthat kind with improved means for oiling the stone located convenientlyand operated with a minimum of diiiiculty; `and to provide an improvedmeans for supporting' the guide for the sharpening stone. Further`objects and advantages `of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings in which,

Fig. 1 is a plan of a sharpening device constructed in accordance withthis invention;

Fig. 2 is a front elevation of the same;

Fig. 3 is a side elevation with parts broken away;

Fig. i is a front elevation of a portion of the supporting bracket forthe blade;

Fig. 5 is a rear elevation of the front. clamping member for the blade;

Fig.l 6'is a central sectional view of a part of the device showing theoiling mechanism, and i Fig. 7 isa rear elevation of the same.

The invention is shown in a form in which it involves a frame 10 whichisprovided with a rigid horizontal arm 11 adapted to reston top of atable 12 or other support for the device. The frame 10 is provided atthe bottom with a screw 130 opposite the projection 11 for clamping itto the table.

At the top the rigid frame 1() is provided with a wall 13 at the fronthaving a slot 14 therein. This receives a screw 15 which is screwed intoa projection 9 on a clamping jaw 16 so that this projection, restingagainst the surface of the wall 13, acts as a fulcrum or pivot for thisjaw. At one end this aw is provided'with a clamping screw 17 for'engaging against the surface of the member 10, preferably7 in a groove18 therein, for clamping kthe upper end of the jaw inwardly against theshear blade A. By this it is forced against a fixed jaw 19 constitutingthe top of the frame 10, This jaw 19 is of a bifurcated form to providea passa-ge communicating with the slot 14 for the insertion of the screw15, as shown more fully in the plan view (Fig. 1). On the inner side thejaw 16 is provided with a lug 2O constituting a restfor the back of theshear blade which is to be placed in the jaws. f

On the rear of the frame 10 above the table is arranged an oil-well 21'formed in the construction shown by the wall 13 and a wall 22 securedto the frame at the back. This wall 22 is provided with a slot 23 inwhich slide a pair of rivets 24 which secure a handle 25 on the outsideand a cup 26 on the inside. This cup 26 preferably is formed of metaland by moving the handle 25 it can be caused to rise and fall in thewell 21.- It islprovided with perforations 27 by which the oil can enterit from the cup and drain back into the cup when it is raised. Itisprovided with a wick 23 of any desired form, such asV a woven wick orsponge, which projects up above the cup. When the handle 25 is raised tothe limit of its motion this cup moves up out of the oil-well so thatthe topl of the wick touches the bottom of the sharpening stone as willappear and applies oil to its lower surface.

Tt is .not necessary to have oil in the reservoir'as an oil soaked wickalone can be used.

The supporting projection l11 has riveted to it a rigid member 30. Thisis so secured Ato the bottom of the projection 11 that its lower surfaceforms a continuation of the lower surface thereof and rests on the topof the table 12 fora distance from the endA of the projection. Tt thenextends upwardly practically at right angles and has at the top ahorizontal flat rest 31 integral with it preferably, but obviouslysupported rigidly. This rest has swiveled to it a guide 32 which isshown in the form of a cylindrical inember rotatable on its own axis andprovided with diametrical passage through it for the reception of a rod33. This vrod is fixed by means of a nut 34 to a rod 35 which has ahandle 36 on the end which passes centrally through a sharpening stoneformed of two halves 37 and 38, one coarse and the other fine. Byscrewing up the nut 34, which is movably mounted on the rod the stone isremovably, but securely, fixed with respect to the rod and handle 36.

The clamping device as will appear is so located with respect to theposition of the swivel guide 32 that the shear blade can be clamped init in only one position and that position is such that when thesharpening stone rests upon it with its rod through the guide 32 theproper angle will be made between the surface of the stone and the shearblade to sharpen the blade properly. It will be "obvious that the motionof the stone on the shear blade isto be both reciprocating andoscillating as indicated by the doublepointed arrow in Fig. l, and thatlin this way the entire lstone can be used without -unclamping andvreadjusting the shear blade, and the swinging of the stone as well asits reciprocation will be accommodated by the rest 32. The passagethrough the guide 32 is a little larger than the size ot' the `rod 33 tofacilitate this action also. l

r'lhis stone is movedback and forth over the blade. ln the use of thedevice the rod 33 is placed in the passage through the guide 32, asshown7 andrst the coarsestone and `then the tine stone placed inLposition torest on the edge of the shear blade A which is clamped in theclamping'device.

The handle 35 fis vraisedfoccasionally to allow the Wick 28 to apply oilto the lower surface of the stone and this furnishes' a l mostconvenient method of oiling. It is par- 'l ticularly valuable for thereason that the ordinary user of an oil stone neglects to oil details ofconstruction herein shown and dei scribed,.but what l do claim is l. lna shear sharpening device, the combination of a pair of jaws for holdinga shear blade in horizontal position, one of said jaws being providedwith an'oil reservoir,

and means supported by one wall of saidr` reservoir and bodily movableup into position for raising oil from said reservoir and s applying theoil to a sharpening stone located above itand supported by the shearblade.

E2'. ln a shear sharpening device, the combination of means for holdinga bladeto be sharpened, a sharpening stone, a movable cup carrying anabsorbentwick, and means torV guiding the cup and wick so that the wickcanbe moved into position tolv apply oil to the sharpening stone.

In testimony whereof4 l have hereunto .A

a'HiXed my signature. GEORGE N. PALSER.

